The judge risked a nip slip after opting for a very daring dress, that left little to the imagination.
However, not all went to plan for the 46-year-old as she made her grand entrance during the ITV show alongside her co-stars.
Despite being hand-in-hand with Simon Cowell and Alesha Dixon, Amanda appeared to nearly take a tumble thanks to her billowing gown.
She turned to the TV mogul open-mouthed after quickly regaining her composure, but not before some eagle-eyed viewers tweeted about her “slip”.
Britain’s Got Talent 2017: Amanda Holden stunned in a plunging pink dress
Britain’s Got Talent 2017: Amanda Holden's cleavage was just about covered Amanda Holden vs Alesha Dixon Wed, May 31, 2017
Britain's Got Talent judges Amanda Holden and Alesha Dixon battle it out in the style stakes.
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BGT judges Amanda Holden and Alesha Dixon wow in daring slit gowns
Oh wow! Amanda Holden's best outfit so far
Two users commented: “@AmandaHolden dragging @SimonCowell just then! Lmao! So cute,”(sic) and: “Pretty sure @AmandaHolden just called @SimonCowell a b*****d because she nearly slipped #BritainsGotTalent2017 #BGT.”
Prior to the instalment, she shared a number of snaps of her show-stopping outfit with her 485,000 Instagram followers, which gave fans a close-up look of the breathtaking pink creation.
Slashed open to the tum, the actress highlighted her slender frame and assets, while her chest was simply covered with dramatic silver embellishment.
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Twitter was inundated with posts about her eye-popping outfit, with one person writing: “Oh wow! Best outfit so far. How can this be topped for final? #perfect.”
Britain’s Got Talent 2017: Amanda Holden looked close to falling over
Britain’s Got Talent 2017: Alesha Dixon looked stunning in black
Others quickly agreed: “@AmandaHolden right now is looking incredible,” and: “@AmandaHolden you look absolutely stunning tonight! #envy #girlcrush.”
But, some thought it was a little too much: “@BGT not sure @AmandaHolden dress is really appropriate for family viewing.”
And: “Watching #BGT @AmandaHolden seems to have forgotten half her dress. It's 8pm family TV.”
Britain’s Got Talent continues tomorrow at 7.30pm on ITV.